Frontend Engineer at The Alter Office · Bengaluru (Bangalore) · 2 - 4 years · ₹8L - ₹12L / yr · Bootstrapped · Posted 29 Sep 2025

Job Summary:
We are looking for a passionate Frontend Engineer with 2 to 4 years of experience to build high-quality, scalable, and user-friendly web applications. You will work closely with cross-functional teams to bring ideas to life using modern JavaScript frameworks, maintaining best-in-class UI standards, performance, and code quality.
Website: https://www.thealteroffice.com/about
Key Responsibilities:
- Develop and maintain modern, high-performance, and responsive web applications using JavaScript frameworks such as React, Vue, or Next.js.
- Translate product designs from tools like Figma into pixel-perfect, accessible, and consistent UI components.
- Build reusable components and contribute to shared design systems or UI libraries.
- Manage state effectively using tools like Redux, Zustand, or Context API.
- Ensure applications are responsive, cross-browser compatible, and adhere to accessibility standards (WCAG).
- Optimize frontend performance using tools like Lighthouse, Web Vitals, and browser profiling.
- Use TypeScript to write type-safe and scalable code.
- Write unit, integration, and E2E tests using frameworks like Jest, Testing Library, Cypress, or Playwright.
- Work with backend teams to design APIs and ensure efficient, secure frontend-backend integration.
- Implement frontend security best practices, such as XSS protection and CSP.
- Use tools like Tailwind CSS, Framer Motion, and Styled Components for rapid, modern UI development.
- Contribute to CI/CD workflows, version control using Git, and deploy applications using platforms like Vercel, Netlify, or Firebase.
- Participate in code reviews, share knowledge, and help drive technical excellence across the team.
Requirements:
- 2 to 4 years of experience building and shipping frontend applications in a professional setting.
- Proficiency in JavaScript (ES6+), HTML5, and CSS3, with a strong understanding of modern frontend architecture.
- Hands-on experience with at least one JavaScript framework/library (React preferred).
- Strong knowledge of TypeScript and state management tools.
- Solid understanding of UI/UX best practices, including responsive design, performance, and accessibility.
- Experience with testing methodologies and automation tools.
- Familiarity with design systems, component libraries, and modern build/deployment tools (Webpack, Vite, Vercel, etc.).
- Comfortable working in agile teams, collaborating with designers, product managers, and backend engineers.

About The Alter Office
About
About Us:
The Alter Office is a dynamic product-building and service-providing company with a diverse portfolio that includes innovative social apps, immersive virtual worlds, unique gaming experiences, Ad-tech and SaaS-based applications. We blend product innovation with comprehensive service solutions, driven by creativity and a quest for excellence. We are seeking passionate individuals eager to contribute to our diverse team.
Our Culture:
At The Alter Office, we promote a fun, collaborative work environment where complex problems are tackled and innovative solutions are celebrated. We encourage everyone to collaborate freely with colleagues at all levels. We seek professionals who align with our values, are driven by our vision, and are passionate about making a significant impact through their work.
Tech stack
Candid answers by the company
The Alter Office is a dynamic product-building and service-providing company with a diverse portfolio that includes innovative social apps, immersive virtual worlds, unique gaming experiences, Ad-tech and SaaS-based applications. We blend product innovation with comprehensive service solutions, driven by creativity and a quest for excellence.
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NEED TO HAVE :
1) Have some knowledge of front end like React.JS
2) HTML, CSS
3) Strong in JavaScript concepts
4) Good communication skills
5) Loves to code
GOOD TO HAVE :
1) Experience with type script will be a plus
2) Experience with Nest.JS framework will be a plus
3) Strong hold on ES6 principles.
4) Familiar with TDD ( Test Driven Development ) will be a plus.
5) Familiar with working in CI / CD will be a plus
6) Micro-Service architecture knowledge will be an added benefit.
You can contact me on this WhatsApp number: Nine three one six one two zero one three two
Job Description:
https://drive.google.com/file/d/12Fcie5u0rhyHeE_xhsNTeGk3mlPId1Mb/view?usp=drive_link
Role Summary
The Senior Front-end Developer builds and maintains client-facing interfaces per UI/UX designs and product requirements, owns front-end architecture and code-review standards, and mentors the Junior Front-end Developer. This is a specialized front-end role, not a full-stack position.
Key Responsibilities
• Own front-end architecture decisions, including framework, state management, and tooling choices.
• Set and enforce code-review, testing, and performance/accessibility standards for the pod.
• Lead implementation of complex, high-visibility features.
• Troubleshoot and resolve complex front-end performance or technical issues.
• Mentor the Junior Front-end Developer, including code review and skill development.
• Partner closely with UI/UX to ensure design fidelity and flag implementation constraints early.
• Evaluate and recommend front-end tooling or library upgrades.
Required Skills & Technical Competencies
• Deep expertise in a modern front-end framework (React strongly preferred) and associated ecosystem.
• Strong understanding of front-end performance optimization and accessibility standards.
• Experience owning front-end architecture for a production application.
Targeted Qualifications
• 5–8 years of front-end development experience.
• Deep expertise in a modern framework (React preferred) and front-end architecture patterns.
• Experience owning performance and accessibility standards.
• Bachelor's degree in Computer Science or related field.
Preferred / Nice-to-Have
• Experience with data-dense or real-time dashboard interfaces (relevant to IoT products).
• Experience mentoring junior developers formally.
About NonStop io Technologies:
NonStop io Technologies is a value-driven company with a strong focus on process-oriented software engineering. We specialize in Product Development and have a decade's worth of experience in building web and mobile applications across various domains. NonStop io Technologies follows core principles that guide its operations and believes in staying invested in a product's vision for the long term. We are a small but proud
group of individuals who believe in the 'givers gain' philosophy and strive to provide value in order to seek value. We are committed to and specialize in building cutting-edge technology products and serving as trusted technology partners for startups and enterprises. We pride ourselves on fostering innovation, learning, and community engagement. Join us to work on impactful projects in a collaborative and vibrant environment
Brief Description:
NonStop io is seeking a proficient React.js developer to join our front-end development team. In this position, you’ll be mainly crafting and integrating UI components through React.js methodologies and workflows like Mobx and Redux.
Responsibilities:
● Developing and implementing UI components using React.js
● Collaborating with cross-functional teams to design and ship new features
● Building reusable components and front-end libraries for future use
● Translating designs and wireframes into high-quality code
● Optimizing components for maximum performance across various web browsers
● Troubleshooting and debugging issues to ensure smooth user experiences
● Participating in code reviews to maintain code quality and consistency
● Improvement and optimization of existing codebase
● Keeping up with industry trends
● Identifying issues with technologies and architecture and then implementing solutions
● Assist with ticket creation, refinement, and estimation
● Participate in sprint planning and ticket distribution for frontend team
Qualifications & Skills:
● Proficiency in React.js and its core principles
● Strong JavaScript, TypeScript, HTML5, and CSS3 skills
● Experience with popular React.js state management libraries and approaches (such as Mobx, Redux, and Context API)
● Familiarity with RESTful APIs and integration
● Knowledge of modern authorization mechanisms, such as JSON Web Tokens
● Understanding of front-end build tools and pipelines
● Familiarity with any one of backend technologies such as Node.js, Java, or Python
● Excellent problem-solving and communication skills
● A strong attention to detail, and a passion for delivering high-quality code
● Expertise in designing scalable and efficient front-end architecture
● Adaptability to changing project requirements and priorities
● Experience with version control systems, particularly Git
● Experience working in Scrum and familiarity with Atlassian (Jira, Confluence, Bitbucket)
● Experience with diverse applications and architectural patterns
● A degree in computer science, software engineering, or a related field
● Strong understanding of object-oriented programming principles and design patterns
● Familiarity with automated testing frameworks and methodologies
● Excellent problem-solving skills and attention to detail
● Strong communication skills and ability to work effectively in a collaborative team environment
● Ready to be a tech-agnostic engineer and comfortable to shift on any tech stack
● Comfortable working with AI (Claude code, Cursor etc)
If you're passionate about technology and want to work on impactful projects, we'd love to hear from you
Job Title: Senior React.js Developer (Immediate Joiner)
Location: Bangalore
Experience: 5+ Years
About the Role
We are looking for a skilled React Developer with 5+ years of experience to join our team immediately. The ideal candidate should have strong expertise in React.js along with a basic understanding of Angular. You will be responsible for developing user interface components and implementing them following well-known React workflows.
Key Responsibilities
- Develop and maintain responsive web applications using React.js
- Build reusable components and front-end libraries for future use
- Translate UI/UX designs into high-quality code
- Optimize applications for maximum performance across devices and browsers
- Collaborate with backend developers and cross-functional teams
- Participate in code reviews and ensure best practices are followed
- Assist in debugging and resolving technical issues
- Work on minor enhancements or support tasks in Angular-based modules (if required)
Required Skills & Qualifications
- 5+ years of hands-on experience in React.js development
- Strong proficiency in JavaScript, HTML5, CSS3
- Experience with state management libraries (Redux / Context API)
- Familiarity with RESTful APIs and integration
- Basic knowledge or exposure to Angular
- Understanding of responsive design and cross-browser compatibility
- Good problem-solving and communication skills
Preferred Skills
- Experience with TypeScript
- Knowledge of modern front-end build pipelines and tools (Webpack, Babel, etc.)
- Familiarity with version control systems like Git
Joining Requirement
- Immediate joiners or candidates with short notice period (0–15 days) preferred
Frontend Design Engineer | Figma + React/TypeScript
Full-time · Remote · 0.5–3 years of experience
₹4–8 lakh per year + ESOPs
Who we are
We’re Alpha, building an AI-native workspace for go-to-market teams. We care about thoughtful product design and the engineering that makes it work: clear information, useful interactions and interfaces that remain reliable as workflows become more complex.
What we’re building
Alpha brings contacts, a unified inbox, campaigns, knowledge and AI-assisted creation into one workspace. These connected workflows present real design challenges: helping users navigate information, manage conversations, move between views and understand what’s happening at every step.
We’re looking for someone who enjoys turning that complexity into an interface people can understand and use confidently.
The role
You’ll work across product design and frontend engineering, taking a feature from user flows and Figma designs through to a working React implementation.
Both sides matter. You should be comfortable making visual and interaction decisions, then translating them into reusable components, responsive layouts and well-managed application state. Your work should feel considered in the details and hold up beyond the happy path.
Key responsibilities
- Design user flows and interfaces in Figma with clear hierarchy, thoughtful interactions and consistent visual details
- Build those experiences in React and TypeScript, carrying the design intent through to the finished interface
- Create and maintain reusable Figma and frontend components
- Implement API integrations, asynchronous interactions and shared state across screens and views
- Handle loading, empty, error and recovery states, keyboard access and different screen sizes
- Work with the team to clarify requirements, discuss trade-offs and iterate on features
- Test your work, investigate bugs and improve usability and reliability
What we’re looking for
- Hands-on ability in both Figma product design and frontend development
- Strong fundamentals in React, TypeScript, HTML and CSS
- A good eye for typography, spacing, hierarchy and interaction design
- Familiarity with component-based development, state management and API integration
- Portfolio or reference work showing what you personally designed and built
- The ability to explain your decisions, code and contribution clearly, including where teammates or AI tools helped
Good-to-have skills
- Experience with SaaS, CRM, AI or workflow-heavy products
- Familiarity with Vite, Tailwind CSS and design systems
- Experience with data-rich interfaces such as tables, boards, filters and detail panels
- Experience with frontend testing and accessibility
What we offer
- Full-time remote work
- Competitive compensation within a ₹4–8 lakh annual salary band
- Equity through ESOPs
- Ownership across design and implementation, with a direct contribution to how Alpha’s product works and feels
How to apply
Share your portfolio or relevant reference work, along with a working demo and code or a code walkthrough where available. Briefly explain what you owned, one important design or engineering decision, and what you would improve next.
Frontend Developers
- Contract To Hire (Initial Engagement: 6 months)
Experience: 5+ years
Mandatory Skills:
● React.js
● React Native
● JavaScript
● Experience in developing scalable and maintainable web and mobile applications
● Frontend architecture and reusable components
● State management
● REST API/backend service integration
● Application performance optimisation
● Authentication/authorisation and frontend security
● Git and pull-request-based development
● Clean, reusable and testable code
● Agile/product development experience
● Code reviews, debugging and production issue resolution
Good to have:
● TypeScript
● Next.js
● Jest / React Testing Library
● CI/CD
● Application monitoring
● Mobile deployment
Responsibilities:
- Developing and implementing UI components using React.js
- Collaborating with cross-functional teams to design and ship new features
- Building reusable components and front-end libraries for future use
- Translating designs and wireframes into high-quality code
- Optimizing components for maximum performance across various web browsers
- Staying up-to-date with the latest industry trends and technologies
- Troubleshooting and debugging issues to ensure smooth user experiences
- Participating in code reviews to maintain code quality and consistency
Required React developer requirements, qualifications & skills:
- Proficiency in React.js and its core principles
- Strong JavaScript, HTML5, and CSS3 skills
- Experience with popular React.js workflows (such as Redux)
- Familiarity with RESTful APIs and integration
- Knowledge of modern authorization mechanisms, such as JSON Web Tokens
- Understanding of front-end build tools and pipelines
- Excellent problem-solving and communication skills
- A strong attention to detail, and a passion for delivering high-quality code
- Adaptability to changing project requirements and priorities
- Experience with version control systems (e.g., Git)
- A degree in computer science, software engineering, or a related field
This role is for our client, who are reimagining video security for the modern world. Their cloud-native platform uses computer vision and AI to help businesses stay safe, make smarter decisions, and move faster; from real-time alerts to seamless clip sharing and multi-site visibility.
You’ll be joining an ambitious, fast-moving team that values clarity, craftsmanship, and impact. Every person there has a voice, ships meaningful work, and helps shape how AI can make the world safer and more connected.
Responsibilities
- Architect and scale high-performance React and TypeScript applications built for real-time surveillance operations.
- Build UI components for video playback, timeline scrubbing, and multi-camera grid management.
- Optimize client-side rendering, network bandwidth, and browser memory usage when streaming high-frequency data.
- Partner closely with Product, Design, and Machine Learning engineers to transform complex AI detection capabilities into simple user experiences.
- Establish frontend architecture patterns, maintain testing standards, and mentor team members.
Skills And Qualifications
- Experience building production web applications in React and TypeScript
- Deep understanding of frontend performance profiling, browser memory management, and client-side optimization
- Hands-on experience working with real-time data streams (WebSockets, SSE, or WebRTC)
- Strong software engineering fundamentals, including modular architecture, state management, and automated testing
- High bar for UI detail, usability, and web accessibility is a plus
- Experience with video technologies on the web (HLS, WebRTC, MSE, or Canvas/WebGL video rendering) is a plus
- Experience building spatial or location-aware dashboards using mapping tools (e.g., Mapbox, Leaflet) is a plus
- Prior experience in fast-paced startup environments or developer-centric B2B SaaS platforms is a plus
What We Offer
- Competitive compensation package
- Early-stage equity in a rapidly growing company
- Referral bonuses
- Team dinners and regular team off-sites
- The latest Apple products and unlimited tech stack
The company is on a mission to transform a $50B+ legacy industry by bringing the power of cutting-edge multimodal LLMs and computer vision to real-world security and operations. From firearm detection to intelligent access control, our AI-native platform turns every camera and sensor into a smart system that enhances safety, efficiency, and awareness.
Job Summary
We are looking for an experienced Frontend Developer / Angular Developer with 5+ years of hands-on experience in building responsive, scalable, and high-performance web applications. The ideal candidate should have strong expertise in Angular, TypeScript, JavaScript, HTML, CSS, along with a good understanding of Java-based backend applications and REST APIs.
Key Responsibilities
- Design, develop, and maintain responsive web applications using Angular.
- Build reusable, scalable, and maintainable UI components.
- Develop clean and efficient code using TypeScript, JavaScript, HTML5, and CSS3.
- Integrate frontend applications with RESTful APIs and Java-based backend services.
- Collaborate with backend developers, UI/UX designers, QA engineers, and business teams.
- Troubleshoot, debug, and optimize application performance.
- Implement responsive designs and ensure cross-browser compatibility.
- Participate in code reviews and follow coding and development best practices.
- Write unit tests and support integration and system testing.
- Analyze production issues and provide effective technical solutions.
- Contribute to application architecture and technical design discussions.
Required Skills
- 5+ years of professional software development experience.
- Strong hands-on experience with Angular.
- Strong knowledge of TypeScript and JavaScript.
- Good understanding of HTML5, CSS3, and responsive web development.
- Experience with Angular components, services, directives, routing, forms, RxJS, and state management.
- Experience integrating REST APIs.
- Good understanding of Java / Spring Boot and backend application integration.
- Knowledge of Git and standard software development practices.
- Experience with debugging, performance optimization, and browser developer tools.
- Good understanding of Agile/Scrum development methodologies.
Good to Have
- Experience with Angular Material or other UI frameworks.
- Knowledge of Java, Spring Boot, Microservices, and SQL.
- Experience with Jasmine/Karma or Jest.
- Exposure to CI/CD pipelines and cloud platforms.
- Knowledge of application security and frontend performance optimization.












